Figure 5

The electron-phonon coupling calculations of Pm-3n CsI3.
The calculated phonon density of states (solid line), Eliashberg spectral function a2F (ω) (dashed line) and the electron-phonon integral (dotted line) of Pm-3n CsI3 at 10 GPa.
The electron-phonon coupling calculations of Pm-3n CsI3.
The calculated phonon density of states (solid line), Eliashberg spectral function a2F (ω) (dashed line) and the electron-phonon integral (dotted line) of Pm-3n CsI3 at 10 GPa.